Shallow-layer geothermal heat exchange system in cold region and construction method thereof

Abstract

The invention discloses a shallow geothermal exchange system in a cold region and a construction method thereof. The shallow geothermal exchange system in the cold region comprises an air inlet pipe, a buried pipe, an air outlet pipe and an indoor air inlet pipe which are sequentially connected; the buried pipe is connected with a water collecting well; the upper end of the air inlet pipe is located above the ground; a dust cover is arranged at an air inlet of the air inlet pipe; the lower end of the air inlet pipe is connected with the buried pipe; a fresh air detector is mounted at an air inlet of the indoor air inlet pipe; and an instrument protection box is arranged outside the fresh air detector. The construction process comprises the steps of positioning and paying off, trench excavation, pipeline mounting, pipeline positioning, pipeline pressure testing, mounting of the dust cover and a protection cover at the air inlet in the top end of the air inlet pipe, mounting of the fresh air detector and the instrument protection box at one end of the air inlet of the indoor air inlet pipe, and pipeline backfilling. According to the shallow geothermal exchange system in the cold region and the construction method thereof, the air-conditioning heating load of a building is reduced through the storage effect of the stratum on cold and heat energy in the nature; by using geothermal as clean energy, environmental benefits are remarkable; the construction difficulty is small; the construction period is short; and conditions are created for developing and using the clean energy in cold regions.

Description

technical field [0001] The invention belongs to the technical field of fresh air systems, and in particular relates to a shallow ground heat exchange system and a construction method thereof in cold regions. Background technique [0002] With the development of my country's economy, traditional energy resources are increasingly scarce, and it is urgent to develop new clean energy alternative resources. Shallow geothermal energy resources have huge reserves, are widely distributed, can be recycled, and have obvious advantages such as low mining cost, mature technology, unaffected by geographical environment, energy saving and environmental protection, and have good social, economic and environmental benefits. The indoor air can be cooled or heated by using the geothermal energy stored in the soil (the temperature of the soil below 2.5-3m below the ground remains constant), so as to improve the indoor air environment and reduce the air-conditioning and heating load of the buil...

AI Technical Summary

Problems solved by technology

However, at present, there are few applications of using shallow geothermal energy to improve indoor air temperature, especially the lack of methods and approaches used in the application process.

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